Today’s picks are dominated by one performer; Lady Gaga rules the roost among the Best Pop Vocal Albums, and with a hefty margin.

Her lead isn’t particularly surprising. With 96,837,043 plays from 2,090,912 listeners she’s one of the most popular contemporary performers among Last.fm listeners.

But Katy Perry‘s relatively strong showing is a surprise. She’s got a little under half the reach of Gaga, but her album only dropped in the late summer; in less than a third of the time that’s a considerable impact.

As far as Last.fm fans are concerned she could come from behind to snatch the coveted award.

John Mayer‘s done surprisingly well too, particularly compared to Justin Bieber. The teen pop sensation might be a YouTube phenomenon, but listeners clearly don’t want him to spend too long on their speakers.

And as for Susan Boyle, she’s far away the outsider of the category. After a difficult twelve months for the singer it might be best that she doesn’t get her hopes up.

We’ll be checking in on Grammy nominees throughout the month, but remember that the results will only be revealed on CBS at 8pm on 13th February.